Plow-lift for gang-plows.



' E- Q I,

J. FROELIGH.

PLOW LIFT FOR GANG PLOWS..

APPLICATION FILED JAN.24,1912.

Patented Mar. 18, 1913.

2 SHEETS-SHEET 1.

11101311127 John F?" 0 eli/ch J. FROELIGH.

PLOW LIFT FOR GANG FLOWS.

APPLICATION FILED JAN. 24, 1912.

Patented Mar. 18, 1913.

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I ZZz b1 z sses Inuenior JET Ln F'r'oe lich #1:, i zflzdg hh an? UNITED strA'rEs PATENT orrion- J'OHN'FROELICH, OF ST. PAUL, MINNESOTA, ASSIGNOR TO HACKNEY MANUFACTU.R

ING COMPANY, OF ST. PAUL, MINNESOTA, A CORPORATION OF MINNESOTA.

PLOW-LIFT; FOR GANG-FLOWS.

To all whom it may concern:

Be it known that I, Join: Fnonmon, a citizen of the United States, residing at St. Paul, in the county of Ramsey and State of Minnesota, have invented new and useful Improvements in Plow-Lifts for Gang- Plows, of which the following is a specification.

My invention relates to improvements in plow lifts. Its object is to provide a simple, durable and efiicient power mechanism for raising and lowering a series of plows successively or collectively as desired.

In the drawings, Figure 1 1s a plan view of my improved plow lift, shown in operative connection with a series of plows; Fig. 2,is a detail plan view showing part of the lifting mechanism; Fig. 3 is a detail sectional view. taken on the line 3-3 of Fig. 1 and Fig. 4 is a detail sectional view taken on the line 4--4 of Fig. 1.

Referring to the accompanying drawings, the gang plow may comprise a frame 10, adapted to be connected at its forward end to a tractor or other vehicle and provided with a rear supporting wheel 11 and a series of plows 12 having their beams 13 adjustably and pivotally connected at their forward ends to said frame.

The plow'lift is constructed as follows:

The brackets 14 are slidably mounted on the frame 10 and provide bearings 15 in which the drive shaft 16 is journaled. This shaft is rotated by any suitable source of power (not shown) and is provided with drive gears 17 adjustably fixed thereon. The driven gears 18 are journaled on the stub shafts 19 in the brackets 14 and mesh with the drive gears 17. These driven gears are mutilated, 6., several teeth on arcs dia-- metrically opposite each other, are absent, so that each of said gears may rest in two normal positions out of mesh-with said drive gears. Each gear 18 is provided with a wrist pin 20, said pins being arranged in identical positions on said gears respectively. Connecting rods 21 are mounted on these pins, their free ends being connected by cables 22 to the plow beams 13. The bracket extensions 23 support the springs 24 which are connected to said wrist pins 20 on the gears 18. In' one normal. position of the driven gears the plows are lowered to'permit their fall to proper working depth. In the other normal position the plows are secured.

Specification of Letters Patent.

in elevated and inoperative positions. The weight of the elevated plows on the gears Patented Mar. 18,1913. Application filed January 24, 1912. Serial No. 673,199. I

\18'and the tension of the springs 24 thereon when the plows are lowered tend to rotate said gears forward as indicated by arrows in Figs. 3 and 4 of the drawings. To control this tendency to rotate, stops 25 are provided, engaging the lugs 26 on the gears 18 whereby said gears are held in their normal positions 'in disengagement from the drive gears '17. These stops consist of sleeves 27 having arms 28 and 29. Said sleeves, provided with levers 80, are slidable on the shaft 31 and "journaled thereon in positlon with the arms 28 and 29 between adjacent faces of the driven gears '18. The

shaft 31 is provided with springs 32 movable on said shaft for yieldingly holding the arms 28 and 29 in normal position and also with removable pins 33 extending through slots 34in the sleeves 27 for limiting the movement of said sleeves and arms. The

. lever 30 on the stop 25, which locks the gear 18 to hold the leading plow, is connected to the hand lever 34 by the rod 35 and is operate thereby to disengage said stop from the lug 26 and release said gear wheel.

'VVhen thiswheel is released the weight of its connected plow or the tension of its spring 24 turns said gear and meshes it with its driving gea r, whereby it is turned a half revolution to its next normal position, and locked by its stop 25. Each of the gears 18 is provided with two inclined trip lugs 36. These lugs are arranged to strike and move the arms 29, thus releasing the coacting arms 28'from the lugs 26 on the next succeeding gears 18. The lugs 36 are located on each gear in such positions relatively that when a gear is revolved, one of its trip lugs 36 releases (at the completion of its half revolution) the -stop for the adjacent gear. Thus after the first stop 25 has been released by the hand lever 134, the remaining stops are released successively and thegears 18 are accordingly turned a half revolution to raise or lower. the plows one after another. The rotation of the drive shaft 16 is regulated and the gears timed so that when the plows are lowered or raised in series, the

furrows will begin or end on a straight line at right angles to said furrows.

I have also adapted this mechanism to raise'and lower the entire gang-of )lOWS as a a unit. The rocker-shaft 37 on the ram-e 10,

is, provided with an arm 38 connected with the hand lever 39 by a rod 40 and with cams 41 a'qjustable longitudinally thereon and respectively positioned adjacent to the arms 30 on the stops 25. The movement of these cams, by the manipulation of the lever 39, releases all of said stops at once and causes the simultaneous rotation of thegears 18 from one normal position to the other, thus raising or lowering the plows concurrently. hen it is desired to change the plows for larger or smaller ones, the brackets 14 are adjusted onvthe frame 10 to locate the gears 18 directly above the plow beams 13, the drive gears 17 areshifted to mesh with said driven gears, and the stops 25 together with the springs 32, pins 33' and cams 41 ported frame of a series of plows connected thereto, a plow lift comprising a plurality of 'powerdriven gears, connecting rods between said gears and plows, stops for looking the gears and means for successively releasing said gears whereby the plows-are raised and lowered one at a time. i

3. The combinationwith a suitably supported frame of a series of plows connected thereto, a plow lift comprising a plurality of power driven gears, connecting rods between said gears and plows, stops for looking the gears and means for simultaneously releasing said gears.

4. The combination with a suitably supported frame of a series of plows connected thereto, a plow lif-t comprising a continuously driven shaft, a series of drive gears on saidshaft, a series of drivengears adapted to mesh with said-drive gears, connecting rods between said driven gears and plows, stops for locking each of said gears, means for manually releasing the first driven gear of the series, and means on each of said gears for releasing its adjacent driven gear.

5. The combination with a suitably supported-frame of a series of plows connected thereto, a plow lift comprisin a series of drive gears, a series of mutilated driven gears arranged to mesh with said drive gears and adapted to revolve intermittently, substantially a half revolution at a time, connecting rods between said driven gears and plows, stops for, locking said gears,

means for ealdflaeais and means on the for throwing said drive and driven gears into mesh.

6. The combination with a suitably supported frame of a series of plows connected thereto, a plow lift comprising a series of drive gears, a series of driven gears with teeth omitted on arcs dian'ietrically opposite each other, stops for locking and means for releasing said gears, connecting rods between said gears and plows, an springs supported on the frame in connection with the driven gears, said rods and springs being adapted to impart an initial movc nent to said driven gears for intermeshing the same with said drive gears.

7. The combination-with a suitably supported frame of a series of plows connected thereto, a plow lift comprising a series of drive gears, a series of driven gears adapted to mesh with said drive gears and having teeth omitted on arcs diametrically opposite each other, lugs on said driven gears, stops for engaging said lugs to lock said gears in position out of mesh with said drive gears, means for manually releasing one of said driven gears, connecting rods between said gears and plows, springs supported on n the frame in connection with the driven gears, said rods and springs being adapted to impart an initial movement to said gears when released, and means for releasing the adjacent driven gear as the preceding gear completes a half revolution.

.8. The combination with a suitably supported frame of a series of plows connected thereto, a plow lift comprising a series of drive gears, a series of driven gears adapted to mesh with said drive gears and having teeth omitted on arcs diametrically opposite each other, lugs on said gears, stops for engaging said lugs to lock said gears in positions out of mesh with said drive gears, means for simultaneously releasing said driven gears, connecting rods between said driven ears and plows, springs supported rame in connection with the driven gears, said rods and springs being adapted to impart an initial movement to the driven gears when released.

9. The combination with a suitably supported frame of a series of plows connected thereto, a plow lift comprising a series of drive gears, a"series of driven gears adapted to mesh with said drive gears and having teeth omitted on arcs diametrically opposite each other, lugs on said gears, stops for engaging said lugs to lock said gears in positions out of mesh with said drive gears. a series of cams adapted to engage said stops, :1 hand lever for simultaneously operating said cams to disengage said lugs and stops, connecting rods between said driven gears and plows, and springs supported on the frame in connection with the driven gears, said 2 and springs being adapted to impart an initial movement to said driven gears whereby said drive and driven gears are intermeshed.

10 The combination with a suitably supframe, of a series of plows connected thereto, a plow lift comprising a continuously driven shaft, a series of drive gears adjustable on said shaft, a series of mutilated driven gears, slidable on said frame and in mesh with said drive gears, said iven gears being adapted to revolve-interttently substantially a half revolution at time, connecting rods between said driven ars and plows, adjustable-stops for locksaid gears, means forreleasing said and means for throwing said drive and oriven gears into mesh.

1 in} combination with a suitably supported platform, of a series of plows connected thereto, a plow lift comprising a plural' w of power driven gears, connecting rods" between said gears and plows, a stop for each gear and means for successively or Copies of this patent may be obtained for flve cents each, by

simultaneously releasing said gears to raise and lower said plows slngly or collectively.

12. A liftfor gang plows comprising a series'of suitably supported shafts, a power driven member revoluble on each shaft, connecting rods arranged respectively between the members and plows, a stop for each member and means for simultaneously disconnectin said stops from said members.

ower driven members, rods connecting said members with the different individual plows, a shaft carrying stops to lock said members and a second shaftcarrying cams to simultaneously shift said stops and release said members.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

7 JOHN FROELICH.

Witnesses:

F. C. CASWELL, G. S. HANSEN.

addressing the Commissioner of Patents,

Washington, I). C.

1ft for gang plows comprising a plurality of 

